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The safest amount of torque

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Old Jan 31, 2010 | 01:33 AM
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dmun505's Avatar
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The safest amount of torque

I was wondering what would be the safest amount of torque to run on our cars with a tune
My mods are
TBE, evo x intercooler +UICP +LICP, and HKS filter
I'm gonna get a tune next weekend, so I'm pretty curious.
Thanks
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Old Jan 31, 2010 | 04:37 AM
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It's around 300tq.
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Old Jan 31, 2010 | 10:17 AM
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I don't remember which dyno it was on but they said at 322 the trans started to slip. I would say stick around 300 and you should be ok. I'm sure one of the tuners will chime in with a more accurate number though.
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Old Jan 31, 2010 | 11:02 AM
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Wasn't it AMS that was just past 300tq and there clutches were slipping at around the 6-8 month mark. I don't know if this takes into account daily driving or from them going to the track but still from my point of view 300tq would no give me ease of mind unless my clutches were upgraded. I would stay in the stock Evo X range until i could afford the upgrade and or finding a shop to do the install on the clutches.
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Old Jan 31, 2010 | 11:23 AM
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^^ didnt they have like 350 hp and 300tq? and then they said the clutches wouldnt hold the power anymore
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Old Jan 31, 2010 | 12:15 PM
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mine was starting to slip right at 300tq.... 294tq seems to be holding alright.
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Old Jan 31, 2010 | 07:15 PM
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I've been running with no issues ever since my tune at TTP.
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Old Jan 31, 2010 | 07:31 PM
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You shouldn't run into any problems as long as you still have the stock turbo. Even with all the other bolt-ons, you probably won't hit high enough torque to make the clutches start slipping.

As for long-term effects of any added power: Who knows? At this point, I haven't heard any numbers on the expected life of the stock clutch packs even at factory power. It's possible that even 10-20 addition lb./ft of torque could shorten the life expectancy of the clutches by years/thousands of miles.
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Old Feb 1, 2010 | 11:42 PM
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do they have the aluminum clutch, plate, and flywheel for the SST will that help the sliping
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Old Feb 3, 2010 | 02:04 PM
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^ There are clutch packs from SSP for the SST.
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Old Feb 3, 2010 | 02:28 PM
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The safest amount of torque
Stock.
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Old Feb 3, 2010 | 02:30 PM
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^ correction: 0lb of torque and it will last forever.

But after about 300lb tq its just a matter of moving the problem upstream. Starts with wearing the clutch, then the next weakest link.
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Old Feb 20, 2010 | 12:23 AM
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From: Lubbock
Originally Posted by Ryan.Kauz
^ correction: 0lb of torque and it will last forever.

But after about 300lb tq its just a matter of moving the problem upstream. Starts with wearing the clutch, then the next weakest link.
lol techinacally thats not true. It is actually above 0 weirdly enough. You can plot a bear-morris ( I think that is what is called, Not to sure though, might be modified goodman diagram.) chart of any mechanical member or system with enough information of course ( material properties, geometry, life cycle loading, errosoin, ect..). Anyways it will show you that there is a infinite opertains point (really low and pointless most of the time) where any kinetic loading under this specific kinetic loading point will not cause elastic deformation in your member. Also, your tranny won't neccisarly fail because of how much torque is applied on it. In reality failure is caused through kinetic loading which is the sum of all the energy inputs into a member. Torque ( its not really the torque its the power input to the system) just so happens to be the dominate factor (motst of the time). Remeber Horse Power is energy and its equal to the scalar dot product of torque and angular velocity HP=T*rpm. Anyways, just a fun fact!

Last edited by chlucero; Feb 20, 2010 at 12:27 AM.
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Old Feb 21, 2010 | 10:34 AM
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Originally Posted by ambystom01
Stock.
haha ambi
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Old Feb 22, 2010 | 04:20 PM
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Didnt they find out that the slipping was not because of the amount of torque? Its just that anything past that the SST cant respond fast enough because its all ran on hydrolics
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